1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Akimi4 [234]
1 year ago
9

What is 4 principles of experimental design

Engineering
2 answers:
Mrrafil [7]1 year ago
7 0

Answer:

manipulation, control , random assignment, and random selection

Explanation:

tresset_1 [31]1 year ago
7 0

Answer:

Manipulation, control, random assignment, and random selection.

Explanation:

You might be interested in
For some metal alloy, the following engineering stresses produce the corresponding engineering plastic strains prior to necking.
kirza4 [7]

Answer:

203.0160

Explanation:

Because you add then subtract then multiply buy 7 the subtract then divide then you add that to the other numbers you got than boom

7 0
2 years ago
The pressure gage on a 2.5-m^3 oxygen tank reads 500 kPa. Determine the amount of oxygen in the tank if the temperature is 28°C
s2008m [1.1K]

Answer:

19063.6051 g

Explanation:

Pressure = Atmospheric pressure + Gauge Pressure

Atmospheric pressure = 97 kPa

Gauge pressure = 500 kPa

Total pressure = 500 + 97 kPa = 597 kPa

Also, P (kPa) = 1/101.325  P(atm)

Pressure = 5.89193 atm

Volume = 2.5 m³ = 2500 L ( As m³ = 1000 L)

Temperature = 28 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T₁ = (28.2 + 273.15) K = 301.15 K  

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

5.89193 atm × 2500 L = n × 0.0821 L.atm/K.mol × 301.15 K  

⇒n = 595.76 moles

Molar mass of oxygen gas = 31.9988 g/mol

Mass = Moles * Molar mass = 595.76 * 31.9988 g = 19063.6051 g

7 0
3 years ago
2. A well of 0.1 m radius is installed in the aquifer of the preceding exercise and is pumped at a rate averaging 80 liter/min.
hodyreva [135]

Question:

The question is not complete. See the complete question and the answer below.

A well that pumps at a constant rate of 0.5m3/s fully penetrates a confined aquifer of 34 m thickness. After a long period of pumping, near steady state conditions, the measured drawdowns at two observation wells 50m and 100m from the pumping well are 0.9 and 0.4 m respectively. (a) Calculate the hydraulic conductivity and transmissivity of the aquifer (b) estimate the radius of influence of the pumping well, and (c) calculate the expected drawdown in the pumping well if the radius of the well is 0.4m.

Answer:

T = 0.11029m²/sec

Radius of influence = 93.304m

expected drawdown = 3.9336m

Explanation:

See the attached file for the explanation.

8 0
3 years ago
If they opened up the International Space Station to tourism, would you go? Why? answer in 2 sentences
Arlecino [84]
Personally, I would go to the space station. The space station has extreme different levels of technology and abilities, plus who doesn’t want to go to space.
6 0
3 years ago
Read 2 more answers
What would happen if an exposed film was accidentally placed in the fixer before being placed in the developer
Eduardwww [97]
Do you still want this answered
5 0
3 years ago
Other questions:
  • A tendon-operated robotic hand can be implemented using a pneumatic actuator. The actuator can be represented by
    15·1 answer
  • A roller-coaster car is traveling at a speed of 23 m/s when it passes through point B. At that point, it enters a concave down c
    8·1 answer
  • A hollow aluminum sphere, with an electrical heater in the center, is used in tests to determine the thermal conductivity of ins
    6·1 answer
  • A flat-plate solar collector is 2 m long and 1 m wide and is inclined 60o to the horizontal. The cover plate is separated from t
    13·1 answer
  • All sized companies are required to have a written fire prevention plan true or false
    14·2 answers
  • How many kg / day of NaOH must be added to neutralize a waste stream generated by an industry producing 90,800 kg / day of sulfu
    6·2 answers
  • Weight limit for a pallet
    15·2 answers
  • 40 POINTS IF ANSERED WITHIN 10 MINS
    13·2 answers
  • As you have learned, not all motor oils are the same. What are two things that make them different?.
    11·1 answer
  • Find the altitude of the right cylinder of maximum convex surface that can be inscribed in a given sphere.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!